Negative total lock fob accounting



Jan. 28, 1941. w, ANDERSON r 2,229,834

NEGATIVE TOTAL LOCK FOR ACCOUNTING MACHINES Filed Dec. 29, 1959 5 Sheets-Shet 1 INVENTOR M4LTER AANDERSO/V l \l BY I Jan. 28, 1941. w. A. ANDERSON NEGATIVE TOTAL LOCK FOR ACCOUNTING MACHINES Filed Dec. 29, 1939 5 Sheets-Sheet '2 Jan. 28, 1941. w. N N 2,229,834

NEGATIVE TOTAL LOCK F Filed Dec. 29, 1939 OR ACCOUNTING MACHINES 5 Sheets-Sheet 3 INVENTOR WALTER A.AND ER80N gwv ATTORNEY Jan. 28, 1941. w'.'A. ANDERSON NEGATIVE TOTAL LOCK FOR ACCOUNTING MACHINES Fil'ed Dec. 29, 1939 5 Sheets-Sheet! INVENTOR WALTER A. ANDERSON BY Ki; I

-ATTORNEY Jan.28, 1941. VW. A.ANDERSIO'N 2,229,834

NEGATIVE TOTAL LOCK FOR ACCOUNTING MACHINES Filed Dec. 29,, 1939 Y -5 Sheet-S-Sheet--5-- INVENTOR WALTER A. ANDERSON avzii ATTO R N EY u pe s Patented Jan. 28, 1941 v UNITED STATES PATENT OFFICE 2,229,834 NEGATIVE TOTAL LOCK FOR ACCOUNTING MACHINE Walter A. Anderson, Bridgeport, com, assignor to Underwood Elliott Fisher Comp ny, New York, N. Y a corporation of Delaware 1 Application December 29, 1939, Serial No. 311,574 a Claim icl. 235-60) This invention relates to accounting machines, anism for closing the motor circuit and for enand more particularly to a means for preventing gaging the clutch between the motor and the I the automatic printing oi negative totals. actuating shait.

It is well known that in bookkeeping opera- The invention is herein exemplified in connec- 6 tions performed on modern accounting mation with mechanism of the general character chines, it is customary to automatically cycle the disclosed in the United States Patents Nos. 1,583,- machine under the control of the traveling car- 10 ,93 ,0 ,664, and 2,088,982, issued to riage to print totals or sub-totals oi the com- Oscar J. Sundstrand, to which reference may be puted debit and credit postings of the account. had for an understanding of the features not it) This automatic printing of total; occurs even fully illustrated or described. herein. It should, 1o though the totalizer is overdraited and the total however, be understood that the present invento be printed negative, In certain bookkeeping tion is not limited to machines of this character. operations, it is desirable to prevent the auto- The machine is of the well-mourn ten-hey, matic printing of negative totals and thus notliy key set, motor operated type, having a traveling 15 the operator or the overdraft. whereas in other paper carria e with a number of controls incorl5 operations, this is not desirable. porated thereon for automatically causing the It is an object of the present invention, theremachine to perform many of its functions in the fore, to provide a simple, optionally operable P p 0011111111111 positions- The machine y be means which, when set to effective position, pre cycled manually y dep s the motor bar, or vents the automatic printing 01a negative total automatically under control of the traveling carand yet will permit manual printing of the negafl etive total when desired by depressing the cus- INDEX TOPICS tomary motor bar in theusual manner. 1 Th 1 and m V the e e machine Sect-10115 and actuating mechinvention consists in certain novel features of g t um t a construction and combinations 0! parts, the esage con m mo or peat sential' elements of which are set forth in appended claims, and a preferred embodiment of oveidmft control mechanism which is hereinafter described with reference to Prevent repeat in sub'mm the drawingswmch accompany and form part of V and total columns when the totaliaer contains the specification a negative total.

. 5. Release of negative total lock.

In the drawings.

Figure 1 is a perspective View 01 an accounting 6. Rendering negative total locx inefiective.

h e emb0 y 8 e invention, 1. The machine sections and actuating mecha- 35 Figure 2 is a diagrammatic view of the keyboard thereot,

Figure 3 is a right side elevation showing'the Referring to Figure 1, the machine includes motor repeat mechanism, together with the mechthe cust mary k y ard I havi am u t keys 2 anism for preventing an automatic cycle when and opemtlcn controlling keys Wi sIS 13 5 Mom generally 40 the character f th tot l i nggative, printing on the work; sheets, a laterally movable iii Figure 4 is a detail rear elevation or the motor p p a a i d t d generally a m unted repeat trip in normal position, on a track 6. and a control plate '5 mounted on Figure 5 is a view similar to Figure 4 but showt e pap r carriage and having a l ty of oning the parts in operated position, trol pins for automatically controlling the opera- Figure 6 is a iragmental perspective view of tions of the machine in predetermined columnar it the overdraft control mechanism that automatipositions. The carriage is provided with the cuscaily conditions the totalizer to take a negative tomary roller platen 9, and the bail structure it. total, for facilitating the insertion of front fed forms. Figure '7 is a detailed right side elevation of the The machine also includes an adding and sub automatic cycle preventive means in operated tracting totalizer, indicated generally at i3 (Fig- 5 position, ure 6), having a plurality of 20-tooth wheels l Figure 8 is a View similar to Figure 7 but show- The machine is actuated by an electric motor ing the automatic cycle preventive means dis- I! (Figure 1). The motor is started by the clos abled, and ing of a, suitable switch such as 3 (Figure 9/),

Figure 9 is a right side elevation 01 the mecln and is coupled with an actuating shalt it (Figure messes 2. {lawless contiolled motor repeat mechanism to eclionisin slmilee to that disclosed in the lve nieutioned Patent No. 2026,66 is proto automatically cycle the machine under is conti'ol of the paper camiege in predates coliunnc-c positions. This mechanism iiie. lever 23 pivoted on e screw 32 secured the machine items. The upper end oi. the ovealies pic 23 fixed in slide it. A link ivotecl at forward end to level 2!) and solo guided for horizontal movement, is 'ly connected, by on extension 25, to an so pivoted on. e. stud 2?] on the machine upper end of sum it lies immediate- 11 ront of a trip lever 23 pivoted at 35 on e. i control housing 32. A spring 33, com t one end to link 28 and at its opposite stationery bracket 35, tensions the link ed the right end cm is. against the lower d of slip levee As shown in Figure 4, lever is normally teal-cloned counterwlockwise stout oi; 38 by a, spring 3%, end when in its normal loo, its lower end lies in obstructing LOOSltoo. with respect to cam 25, e lug ll thereon itting a stud filled on housing 32 to so e the lever. An upward extension ll on fiver lies in the path of pins such as 32 that n the com-loge columnar positions wherein it is desired to hove the machine automatically cycled. its the carriage advances to one of these posii us, a pin 22 strikes extension ii and rocks 28 clockwise about pivot as shown in lfiigui'e 5. This action releases arm 26 to the tension of spring 33, which pulls link 2% toward the right and swings lever 25 clockwise about its gaivot 22, causing its upper end to engage stud 231d depress slide 98, initiating a machine leans is provided for restoring the arm latched position in order that the machine ll stop at the end of the cycle of operations. means is similar to that disclosed in the entioned Patent No. 2,020,664, and in s bail d3 (better shown in Figure 6) which seconds to the member 1057 in Patent No. 1' 33 carries e. pin 36 that is so to engage a shoulder 55 on link 2& and e li'cl: forward so as to withdraw lever om pin and swing lever into a posiiront of trip lever 28. On the return of the main rock shaft it, as pin 36 moves from the shoulder spring again ten-- arm against trip lever 28, in readiness itiate the next cycle. uable carriage tabulating mechanism similar to that disclosed in Patent No. 2,088,982 is provided to automatically tob-ulote the carriage from is olunin to the next. This mechanism operduring the return stroke of roclc shaft therefore, possibility that incident to ilotion. 2. control pin might lever with this znechanism,

28 to initiate a new cycle before the instant cycle is completed. Mechanism similar to that disclosed in Patent No. 2,020,664.- is provided to prevent such misoperation. Briefly, this mechanism comprises a lever 48 (corresponding to lever 36 5 in Patent No. 2,020,664) pivoted at 47 and carrying a. stud '48. An arm (not shown), connected with rock shaft H5, is arranged to rock lever 46' clockwise against the tension of a. spring 53 toward the end of the forward stroke of the rock shaft, and a. detent (not shown), cooperating when the arm releases the detent and allows spring 53 to restore lever 46 to its normal posi-- tion shown in Figure 3. As lever 46 swings clockwise, stud 88 is raised to a position immediately beneath a. lug 56 n slide I8, as shown in Figure 7, to look-slide is against depressioii" and thus prevent premature initiation of a. machine cycle.

In order to have lever 2! function properly, 1. e., to have it depress slide $8 for initiating a. cycle. it is necessary that the lever be released from the position shown in Figure 3, where it lies a slight distance from pin 23, rather than from a position where it would be touching pin 23. This is required to give the lever the necessary impetus to overcome the resistance offered by slide l8 and its associated clutch releasing parts.

Also it is necessaiy that there be a sufficient lapse of time between the release of the carriage for tsbulation, and the movement of arm 26 to the rear to rest against lever 28, for the carriage to move stud 82 past the extension H on trip lever 28, to allow spring 36 to restore trip lever 28 to its latching position. To accomplish this, there is provided a bell crank 5| pivoted at 52 and having a horizontal arm lying beneath stud 8. The opposite arm of bell crank 5i carries a (0 plate 56a that has a shoulder 54 arranged to overlie an extension 55 of lever 25. A spring 51, connected .between the bell crank and. extension 55, tensions bell crank counter-clockwise about pivot 52, holding the horizontal arm of the bell 45 to return to its latching position.

3. Overdraft control mechanism Totalizer i3 is normally in mesh with adding racks such as 58 (Figure 6) in. both accumulatlug sud total taking operations. Depression of gaging the totalizer with. subtracting racks such as ti in accumulating operations. A mechanism similar to that disclosed in Potent No. 2,088,982 is provided on this machine to insure automatic engagement of the totslizer with the subtracting racks during the bionic cycle preceding the taking of the total, in event that the totalizer has become overdraited, i. e., credit amounts have exceeded debit emounts, erecting a nega.-

However, when lever 46 is rocked 50 tive total. This mechanism includes the following parts.

The lower arm of ball 43 carries a yielding projection 62 arranged to be elevated to lie directly in front of a stud 63 flxed on a slide 60 that controls the engagement of wheels H with subtraction racks 6! (as explained in the abovementioned patent). The means for elevating ball 43 comprises a bell crank 00 pivoted on stud 21 and having a horizontal arm 01 underlying a pin 08 secured to the bail. The vertical arm H of the bell crank has an inturned flange 12 that normally, during each cycle of the machine, stops against a stop lever ll pivoted as at H in the machine frame. A link I! (No. 1076 in Patent No. 2,088,982), pivoted on a stud II secured in arm II, has connected thereto a spring 11 which tensions flange 12 toward stop lever 13.

The rear end of lever 13 embraces a pin 18 fixed in an extension ll of a plate I! mounted for pivotal movement on a rod 83 supported in the machine frame. The upper edge of plate 82 lies within a slot in the rear end of a link 8 connected by a pin-and-slot connection with arms Ii pivoted on rods 80. Arms 05 are provided with dogs 81 that latch on bars .88 fixed in the machine frame on opposite sides of wheels II. The dogs are arranged to be disengaged'from bars 80 by diametrically opposed lugs .89 on the totalizer wheel ll of highest order.

A roller 9| on the lower end of a lever 92 that oscillates forward and back during each cycle of the machine is arranged to bear against a flange 98 on arm ll of bell crank l6, and hold flange 12 a short distance away from stop lever 13 when lever 02 is in its normal position shown in Figure 6. When an amount accumulated in the totalizer represents a debit balance, the parts are in the position shown in Figure 6. However, when the totalizer is overdrafted, the wheel H of highest order passes through zero, causing lug II to trip dog 81 on the subtract side of the totalizer and to swing arm 85 clockwise about its rod 8| under tension of a spring 04. This movement thrusts link 84 toward the right, as viewed in Figure 8, rocks plate .2 clockwise about rod 83, and swings stop lever 13 downwardly, about its pivot H, out of the path of flange 12.

If a blank cycle is now taken to condition the machine for a total operation, the movement of roller 8| away from flange 93, at the beginning of the cycle, allows bell crank it to swing clockwise about stud 21 to move link 15 forward. During this movement, arm $1 elevates bail l3, bringing projection 01 into the plane of stud l3. Clockwise oscillation of bail 43 about its two pivot studs 65 then causes the projection to strike the stud and thrust slide N rearwardly to actuate parts which will place wheels ll in engagement with subtraction racks ll at the beginning of the last half of the cycle, preparatory to the taking of the negative total on the succeeding cycle. At the end of the second half of the blank cycle, roller 9! again strikes flange O3, rocking bell crank 68 counterclockwise to its normal position.

Mechanism'similar to that disclosed in Patent No. 2,088,982 is provided on the forward end of link Ii to prevent the link from moving forward when an amount is indexed in the keyboard, so that even though stop lever 13 is lowered out of the path of flange 12 by virtue of the presence of a negative balance in the totaliner, the latter will not be automatically engaged with the subtraction racks for accumulating operations. This mechanism includes an. arm; N

- bell crank 51.

(Figure 8) secured on a shaft I00, the arm he moved by the shaft into the path of forward movement of an arm ill! on the forward end 01? link I5, when an amount is indexed on the heyboard. Hence, it is apparent that link l5 will permitted to come forward under the tension oi sprlngll only during a blank cycle, and further, only when there is an overdraft in the totalizer. This should be borne in mind since this link con trols the locking of the automatic motor repeat mechanism to prevent the printing of a negative total, as will now be described.

4. Lock to prevent motor repeat in snb-tota1 and total columns when the totalizer contains a negative total to the bracket. A spring 98, connected between arm 56 and arm I0! on link 15, holds a flange I02, formed on arm 96, against arm Hit. A look lever I03 is pivoted on screw 22 and connected at I06 to a latch I05. A spring in, connected between the latch and the machine frame, tensions the latch upwardly and lever sea counter-clockwise, holding the lower edge of lever I03 against flange l02.

Considering the totalizer as containing a negative total, and that the machine is going through the necessary blank cycle preceding the taking of the total, as link 15 moves forward as above do: scribed, flange 102 moves forward of shoulder I" on lever I03 (see also Figure 5), permitting the tension of spring I04 to lower theforward end of lever I 03 until a projection ma thereon rests on a pin I08 secured to the lower end of Toward the end of the first halt of the cycle, when clockwise movement of lever 46 allows bell crank 5:1 to rock countermlockwise about pivot 52 to place shoulder 54 over exten sion 55, pin 108 moves in the rear of projection I09, allowing lever N13 to swing further counter clockwise, where projection Hi9 lies. in front of the pin, as shown in Figure 7. Durlngthe latter half of the cycle, link 15 moves to the rear to the position shown in Figure 3, spring 98 yielding to permit such movement. The parts are now in the position shown in Figure 7. Upon the carriage tabulating to the adjacent sub-total or total columnar position, even though a pin n2 trips le ver 28 to initiate a cycle for printing the total, the cycle is prevented because lever 2i is prevented from being moved clockwise to depress the motor bar. This notifies the operator that the totalizer contains a negative total.

5. Release of negative ioiai' iccic When the operator desires to'print the nega tive total, he need only depress motor bar ill to release the machine. The depression also re leases lock lever I03 by the following connection. A bell crank HI (Figure '7), pivoted at 02 adjacent bell crank Si, is bifurcated at one end to embrace a stud I 12 on the stem of the motor bar, and has a flange H3 at its other end underlying he lever elevated, until link 5 is again lilll'llllfi a bidet: cycle.

oegccice total lock ineffective "ore stated, it is sometimes desirable to fore. bookkeeping operations wherein negatotcls are automatically printed along with it totals, cod in such instances it is unneceso notify the operator of the presence of an the totalizer. To permit this on provided with the above described negis giddec'l for vertical movement in a o, bracket Mb secured to the machine A shoulder lid is provided on arm W5, e low cod oi the is i'ormed with a. e l W. it only necessary that the opepresc soc egamct the tension oi and move the arm slightly to the rear, older books under the right hand et i movie in Figure 8. The emeni; L to move shoulder l lb is elect to swing: lock to mcfi'ective position. The old ih position by spring lid until c role iced admirably adapted to iulfill the sta d, it is to be understood d confine the invention to cent herein disclosed, for

, UTE/@038 carriage, cycle initiating :2, corltrolled. by the cdrrlege, to optier; and. means, com

l moons controlled by the ve for initiating the succeeding oi described, a totaltraveling; cerrioee, cycle initiating means, controlled by the carriage, to opete the cycle inltloting means, means to noriiy l tch the gold means controlled by the cari orltioh during it portion of e total lock, the following construction is promachine cycle, and means controlled by the totalizer to hold said latching means in effective pod-- don.

3, In a, machine of the class described, a totalizer, a traveling paper carriage, cycle initiating means, means, controlled by the carriage, to opemte the cycle initiating means, means to normally latch the said means controlled by the carridge in inefiective position during a. portion of a machine cycle, means controlled by the totalizer to hold said latching meanslin efl'ective position, and a, manually operated means for operating the cycle mitiating means and for releasing the sold holding means.

4. In a machine of the class described, a totalizer, a. traveling paper carriage, cycle initiating means, means, controlled by the carriage, to opcrate the cycle initiating means) means to normolly latch the said means controlled by the carrlage in ineffective position during a portion of a machine cycle, means controlled by the totallzer to hold said latching means in effective position, and a. manually adjustable means for latching the said holding means in lnefiectlve position.

5. In a. machine of the class described, a totalizer, means to initiate a machine cycle, a traveling carriage, means controlled by the carriage for operating the cycle initiating means, the second mentioned means including a spring actuated lever, a, latch movable into and out of position to prevent movement of the lever, a normally ineffective member for holding said latch in effective position, and mechanism controlled by the total-,

izer and operable during a blank cycle for renderlog the holding member effective.

6. In a. machine of the class described, a totallzer, means to initiate a machine cycle, a travelmg carriage, means controlled by the carriage for operating the cycle initiating means, the sec- .ond mentioned means including a, spring actuated lever, a latch movable into and out of position to prevent movement of the lever, 2, normally ineffective member .for holding said latch in efiecttve position, mechanism controlled by,

the totalizer and operable during a, blank cycle for rendering the holding member effective, a. motor bar for operating the cycle initiating means, and means under control of the motor bar 3701' rendering the holding member rlnefiective. WALTER A. ANDERSON. 

